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HomeMy WebLinkAboutGeotechnical Investigation 03.07.2023Huddleston-Berry Engineering & Testing, LLC A-1 Solutions 353 W Orchard Avenue Silt, Colorado 81652 Attention: Subject: Dear Mr. Ruiz, Mr. Josue Ruiz Geotechnical Investigation Parcel 212726408029 Silt, Colorado 2789 Riverside Parkway Grand Junction, Colorado 81501 Phone: 970-255-8005 lnfo@huddlestonberry.com March 7, 2023 Project#02614-0001 This letter presents the results of a geotechnical investigation conducted by Huddleston-Berry Engineering & Testing, LLC (HBET) at Parcel 212726408029 in Silt, Colorado. The site location is shown on Figure 1. The proposed construction is anticipated to consist of a new single family residence. The scope of our investigation included evaluating the subsurface conditions at the site to aid in developing foundation recommendations for the proposed construction and to evaluate the site soils for onsite wastewater treatment. Site Conditions At the time of the investigation, an unnamed drainage occupied the center portion of the site. The remainder of the site was open and generally sloping down towards the east. Vegetation consisted of weeds, grasses, brush, and small to large trees in the vicinity of the drainage. The site was bordered to the north and east by rural residential properties, to the west by a rural residential property and a vacant lot, and to the south by Odin Drive. Subsurface Investigation The subsurface investigation included three test pits as shown on Figure 2. The test pits were excavated to depths of 7.0 and 8.0 feet below the existing ground surface. Typed test pit logs are included in Appendix A. As indicated on the logs, the subsurface conditions at the site were consistent. The test pits encountered 1.0 foot of topsoil above brown, moist, stiff sandy lean clay with gravel and cobble soils to the bottoms of the excavations. Groundwater was not encountered at the time of the investigation. Laboratory Testing Laboratory testing was conducted on samples of the native soils encountered in the test pits. The testing included grain size analysis, Atterberg limits determination, natural moisture content determination, and maximum dry density and optimum moisture content (Proctor) determination. The laboratory testing results are included in Appendix B.